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Ammonium Hydrogen Difluoride 2.5KG 95%
Item #:
SIG/224820-2.5KG
Supplier #: 224820-2.5KG
Supplier #: 224820-2.5KG
SIGMA-ALDRICH CORPORATION Part No. 224820-2.5KG
reagent grade, 95% Synonym(s): Ammonium bifluoride; Etching powder Empirical Formula: H5F2N Formula Weight: 57.04 Linear Formula: NH4HF2 MDL Number: MFCD00012018 Purity: 95% Melting Point: 125 °C(lit.) RTECS No.: BQ9200000 RIDADR: UN 1727 8 / PGII
reagent grade, 95% Synonym(s): Ammonium bifluoride; Etching powder Empirical Formula: H5F2N Formula Weight: 57.04 Linear Formula: NH4HF2 MDL Number: MFCD00012018 Purity: 95% Melting Point: 125 °C(lit.) RTECS No.: BQ9200000 RIDADR: UN 1727 8 / PGII
2-Aminoethyl diphenylborinate 5g
Item #:
SIG/42810-5G
Supplier #: 42810-5G
Supplier #: 42810-5G
SIGMA-ALDRICH CORPORATION Part No. 42810-5G
Synonyms: 2-APB; 2-Aminoethoxydiphenyl borate; 2-Aminoethyl diphenyl borate; Diphenylboric acid 2-aminoethyl ester; Diphenylborinic acid; NSC 17107 Formula: (C6H5)2BOCH2CH2NH2 Formula Weight: 225.09
CAS No.: 524-95-8 Purity: ≥97.0% (NT); ≥97.0% Other Notes: Reagent for the densitometric determination of flavonoids 1, 2, 3
Synonyms: 2-APB; 2-Aminoethoxydiphenyl borate; 2-Aminoethyl diphenyl borate; Diphenylboric acid 2-aminoethyl ester; Diphenylborinic acid; NSC 17107 Formula: (C6H5)2BOCH2CH2NH2 Formula Weight: 225.09
CAS No.: 524-95-8 Purity: ≥97.0% (NT); ≥97.0% Other Notes: Reagent for the densitometric determination of flavonoids 1, 2, 3
Ammonium CitrateDibasic ACS Rgnt,98%
Item #:
SIG/247561-2.5KG
Supplier #: 247561-2.5KG
Supplier #: 247561-2.5KG
SIGMA-ALDRICH CORPORATION Part No. 247561-2.5KG
ACS reagent, 98% Synonym(s): Ammonium hydrogencitrate; Citric acid ammonium salt; Diammonium hydrogen citrate Empirical Formula: C6H14N2O7 Formula Weight: 226.18 Linear Formula: HOC(CO2H)(CH2CO2NH4)2 MDL Number: MFCD00013068 Purity: 98%; 98.0-103.0% (ACS specification) Beilstein Registry Number: 4925760 RTECS No.: GE7545000 RIDADR: UN 3077 9 / PGIII
ACS reagent, 98% Synonym(s): Ammonium hydrogencitrate; Citric acid ammonium salt; Diammonium hydrogen citrate Empirical Formula: C6H14N2O7 Formula Weight: 226.18 Linear Formula: HOC(CO2H)(CH2CO2NH4)2 MDL Number: MFCD00013068 Purity: 98%; 98.0-103.0% (ACS specification) Beilstein Registry Number: 4925760 RTECS No.: GE7545000 RIDADR: UN 3077 9 / PGIII
Ammonia CHEMets® Kit, 0-1 & 1-10
Item #:
TMS/9866E05
Supplier #: 9866E05
Supplier #: 9866E05
CHEMetrics Part No. K-1510
Low-level ammonia nitrogen may be naturally present in water as a result of the biological decay of plant and animal matter. Higher concentrations in surface waters can indicate contamination from waste treatment facilities, raw sewage, industrial effluents (particularly from petroleum refineries), or fertilizer runoff. Excessive ammonia concentrations are toxic to aquatic life. The Direct Nesslerization Method Reference: ASTM D 1426-08, Ammonia Nitrogen in Water, Test Method A. APHA Standard Methods, 18th ed., Method 4500-NH3 C - 1988. The test kits employing the well-established Nessler reagent* to determine ammonia concentrations are applicable to drinking water, clean surface water, good-quality nitrified wastewater effluent, and seawater. In some waters, calcium and magnesium concentrations can cause cloudiness of the reagent. Adding a few drops of stabilizer solution (Rochelle Salt) will prevent this cloudiness. References recommend distilling samples prior to analysis. Results are expressed as ppm (mg/L) ammonia-nitrogen, NH3-N. Shelf-life: although the Nessler reagent is stable, its high alkali content attacks the glass ampoule. The resulting precipitate interferes with color comparison. We recommend stocking quantities of CHEMets® and VACUettes® ampoules that will be used within five months. A two-month supply of Vacu-vials ampoules is suggested. Refrigeration will dramatically extend the shelf-life of these products. Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Stabilizer Solutions, 25 mL sample cup, 1.0 mL syringe, and instructions.
Low-level ammonia nitrogen may be naturally present in water as a result of the biological decay of plant and animal matter. Higher concentrations in surface waters can indicate contamination from waste treatment facilities, raw sewage, industrial effluents (particularly from petroleum refineries), or fertilizer runoff. Excessive ammonia concentrations are toxic to aquatic life. The Direct Nesslerization Method Reference: ASTM D 1426-08, Ammonia Nitrogen in Water, Test Method A. APHA Standard Methods, 18th ed., Method 4500-NH3 C - 1988. The test kits employing the well-established Nessler reagent* to determine ammonia concentrations are applicable to drinking water, clean surface water, good-quality nitrified wastewater effluent, and seawater. In some waters, calcium and magnesium concentrations can cause cloudiness of the reagent. Adding a few drops of stabilizer solution (Rochelle Salt) will prevent this cloudiness. References recommend distilling samples prior to analysis. Results are expressed as ppm (mg/L) ammonia-nitrogen, NH3-N. Shelf-life: although the Nessler reagent is stable, its high alkali content attacks the glass ampoule. The resulting precipitate interferes with color comparison. We recommend stocking quantities of CHEMets® and VACUettes® ampoules that will be used within five months. A two-month supply of Vacu-vials ampoules is suggested. Refrigeration will dramatically extend the shelf-life of these products. Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Stabilizer Solutions, 25 mL sample cup, 1.0 mL syringe, and instructions.
Ammonia Vacuettes Refill w/diluter pk/30
Item #:
TMS/9866E11
Supplier #: 9866E11
Supplier #: 9866E11
CHEMetrics Part No. R-1501D
Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, dilutor snapper cup, micro test tube, and instructions. Range: 0-30 & 30-300 ppm MDL: 5 ppm Method: Direct Nesslerization Shelf-life: Although the Nessler reagent is stable, its high alkali content attacks the glass ampoule. The resulting precipitate interferes with color comparison. The refill has a 5-month shelf life when stored in the dark and at room temperature. This shelf life can be extended by 18 months if the refill is refrigerated. *Contains mercury. Dispose according to local, state or federal laws.
Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, dilutor snapper cup, micro test tube, and instructions. Range: 0-30 & 30-300 ppm MDL: 5 ppm Method: Direct Nesslerization Shelf-life: Although the Nessler reagent is stable, its high alkali content attacks the glass ampoule. The resulting precipitate interferes with color comparison. The refill has a 5-month shelf life when stored in the dark and at room temperature. This shelf life can be extended by 18 months if the refill is refrigerated. *Contains mercury. Dispose according to local, state or federal laws.
Aluminum Standard 10,000ppm 125mL
Item #:
TMS/C996N66
Supplier #: C996N66
Supplier #: C996N66
Agilent Technologies, Inc.
Mfg Item # : ICP-113
1 Analyte(s) @ 10,000 Ýg/mL in water with dilute nitric acid
Mfg Item # : ICP-113
1 Analyte(s) @ 10,000 Ýg/mL in water with dilute nitric acid
Ammonium Acetate 500g
Item #:
VAN/97061-014
Supplier #: 97061-014
Supplier #: 97061-014
VWR
Mfg Item # : VWRV0103-500G
Ammonium Acetate Ultra Pure Grade
Exact Match: 97061-014
Mfg Item # : VWRV0103-500G
Ammonium Acetate Ultra Pure Grade
Exact Match: 97061-014
AMMONIUM SULFITE 95% 1KG
Item #:
VAN/AA17996-A1
Supplier #: AA17996-A1
Supplier #: AA17996-A1
Alfa Aesar
Mfg Item # : 17996-A1
Ammonium sulfite 92% min.Crystalline,CAUTION: May be harmful if swallowed,1kg,5kg.
Exact Match: AA17996-A1
Mfg Item # : 17996-A1
Ammonium sulfite 92% min.Crystalline,CAUTION: May be harmful if swallowed,1kg,5kg.
Exact Match: AA17996-A1
Ammonium Nitrate, 500g, Ea.
Item #:
VAN/AAA12363-36
Supplier #: AAA12363-36
Supplier #: AAA12363-36
Alfa Aesar
Mfg Item # : 12363-36
Ammonium nitrate, ACS, 95% min 500g MFCD00011425
Exact Match: AAA12363-36
Mfg Item # : 12363-36
Ammonium nitrate, ACS, 95% min 500g MFCD00011425
Exact Match: AAA12363-36
